Di tutti i colori!

The hundredth number of the regular series is celebrated with a color book, which contains three short stories in which color is the common thread. In the first, a bizarre inventor develops a device capable of highlighting mysterious aliens made of light, invisible to the naked eye. In the second, a photolithist goes crazy trying to reproduce the perfect Prussian blue of a painting by Yves Klein. In the third, Martin and Java explore a lost gray valley in the Andes, whose inhabitants consider being "in color" a sacrilege...